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A novel algorithm of multi-burst stepped-frequency signal co-processing are proposed, from which the high resolution in both range and velocity profile of moving targets can be achieved. A fast keystone transform is presented to remove the range migration between the bursts causing by the long-term integration, which is of efficiency to implementation. A real-time signal processing system is designed...
In the development of the step frequency radar, time and costs would be greatly curtailed by applying the echo simulator of step frequency waveform to verify the signal processing system. This paper analyzes the characteristics of step frequency echoes in detail and describes the implementation of the point-target echo simulator based on DDS. The experimental results of the scheme show that the equipment...
Stepped frequency radar signal has been widely used for its high range resolution and low instantaneous bandwidth. Frequency-stepped chirp signal is a useful waveform which can decrease the frequency step number while the synthesized bandwidth remains unchanged. The spectrum synthesis method based on coherent addition is introduced to avoid the range ambiguity or “ghost” images caused by the conventional...
A long-term integration algorithm using the HPRF stepped frequency waveform is presented to improve the range and Doppler resolution of moving targets. A stepped frequency radar signal is applied to realize high range resolution; a long-term integration is applied to realize high Doppler resolution. Besides, with the long-term integration, the gain from coherent integration can also be improved a...
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